What are the flame retardant additives used in PVC outdoor pet waste bins?

PVC outdoor pet waste bins require flame retardant additives to ensure safety and durability in various environmental conditions. These additives help reduce the risk of fire hazards, making the bins suitable for outdoor use where exposure to heat or potential ignition sources may occur. Common flame retardants used in PVC for such applications include halogen-based compounds like chlorinated paraffins and brominated additives, which work by releasing flame-inhibiting gases when exposed to fire. Additionally, non-halogen options such as aluminum trihydroxide (ATH) and magnesium hydroxide are popular for their eco-friendly properties, as they decompose endothermically to cool the material and dilute flammable gases. Other additives like antimony trioxide may be combined with halogenated compounds to enhance effectiveness. The selection depends on factors like cost, regulatory compliance, and desired fire resistance levels, ensuring the bins meet safety standards while maintaining structural integrity over time.